Lebanon, a city in and the county seat of Wilson County, Tennessee, United States. The population was 26,190 at the 2010 census. Lebanon is located in Middle Tennessee, approximately 25 miles (40 km) east of downtown Nashville. Lebanon is part of the Nashville Metropolitan Statistical Area. source

Area codes 615 and 629 are area codes in Tennessee serving Nashville (Davidson County) and the 12 surrounding counties. 615 is the main area code, while 629 is an overlay covering the same area that will begin service in 2014. Besides Nashville, Murfreesboro, Franklin, Hendersonville, and Lebanon are other major cities in the 615/629 service territory. source